Choice "D" is correct. When issuing letters for underwriters, commonly referred to as comfort letters, an accountant may provide negative assurance concerning the conformity of the entity's unaudited condensed interim financial information with generally accepted accounting principles (GAAP).
Choice "b" is incorrect. Comments in a comfort letter are limited to financial information.
Choice "c" is incorrect. Negative assurance is not provided in compilation engagements.
Choice "a" is incorrect. When issuing letters for underwriters, commonly referred to as comfort letters, an accountant typically provides positive assurance concerning the compliance of the audited financial statements and financial statement schedules included in the registration statement with the requirements of the Securities Act of 1933.